Re: [LTP] [PATCH] mem.c: check whether MADV_MERGEABLE is available

[Jan Stancek <jstancek@redhat.com>]

----- Original Message -----
> From: "DAN LI" <li.dan@cn.fujitsu.com>
> To: "LTP list" <ltp-list@lists.sourceforge.net>
> Sent: Friday, 17 May, 2013 4:32:16 AM
> Subject: [LTP]  [PATCH] mem.c: check whether MADV_MERGEABLE is available
> 
> Before using MADV_MERGEABLE, check whether it's available by macro
> HAVE_MADV_MERGEABLE.
> 
> Signed-off-by: DAN LI <li.dan@cn.fujitsu.com>

Small and straightforward change.

Reviewed-by: Jan Stancek <jstancek@redhat.com>

> ---
>  testcases/kernel/mem/lib/mem.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/testcases/kernel/mem/lib/mem.c b/testcases/kernel/mem/lib/mem.c
> index 7cda3c5..9bc926e 100644
> --- a/testcases/kernel/mem/lib/mem.c
> +++ b/testcases/kernel/mem/lib/mem.c
> @@ -494,8 +494,10 @@ void test_ksm_merge_across_nodes(unsigned long nr_pages)
>  			    MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
>  		if (memory[i] == MAP_FAILED)
>  			tst_brkm(TBROK|TERRNO, tst_exit, "mmap");
> +#ifdef HAVE_MADV_MERGEABLE
>  		if (madvise(memory[i], length, MADV_MERGEABLE) == -1)
>  			tst_brkm(TBROK|TERRNO, tst_exit, "madvise");
> +#endif
> 
>  #if HAVE_NUMA_H && HAVE_LINUX_MEMPOLICY_H && HAVE_NUMAIF_H \
>  	&& HAVE_MPOL_CONSTANTS
> --
> 1.7.11.rc0
> 
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